diff --git a/pyproject.toml b/pyproject.toml
index 841d421..c5476a3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,7 +40,7 @@ test = [
 # https://github.com/dependabot/dependabot-core/issues/1524 . Well ok, then!
 dev = [
     "pre-commit",
-    "ruff == 0.3.2",
+    "ruff == 0.4.1",
 ]